Dictionaries, Thesauruses, Pictures, and Press Releases
- Nidulariales
- Nielsen, Niels
- Niepce, Joseph (Later Nicéphore)
- Niesten, Jean Louis Nicolas
- Nieuwenkamp, Willem
- Nieuwentijt, Bernard
- Nieuwland, Julius Arthur
- Niggli method
- night herons
- night monkey
- night shine
- night-hawks
- nightingales
- Nikitin, Sergey Nikolaevich
- Nikolaev, Viktor Arsenievich
- Nile bichir
- Nilsson-Ehle, Herman
- nimbostratus
- nimbostratus
- NIMS